Influence of the rough sphere rotation on the drag force

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F10%3A00343499" target="_blank" >RIV/67985874:_____/10:00343499 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of the rough sphere rotation on the drag force

Popis výsledku v původním jazyce

The shape of the particles in the real fluid flows is different from the spherical. Influence of the shape on the particle motion is very interesting; however, in the common case this problem can't be solved. Therefore, the special cases of the particleshape play important role. One of such case is the particle shape near to spherical -- the rough sphere, i.e. the sphere with rough surface. In the present work this problem is studied for the rough sphere moving and simultaneously rotating in fluid. Thezone of low pressure is formed behind the sphere. This zone gives the main contribution in the drag. If the sphere moves and rotates in fluid the secondary flow supplies the fluid in the zone of low pressure behind the sphere, the pressure in this zoneincreases and the drag decreases. In the case of a smooth sphere this effect is visible for the large angular velocity only whereas in the case of the rough sphere it can be observed even for the small one.

Název v anglickém jazyce

Influence of the rough sphere rotation on the drag force

Popis výsledku anglicky

The shape of the particles in the real fluid flows is different from the spherical. Influence of the shape on the particle motion is very interesting; however, in the common case this problem can't be solved. Therefore, the special cases of the particleshape play important role. One of such case is the particle shape near to spherical -- the rough sphere, i.e. the sphere with rough surface. In the present work this problem is studied for the rough sphere moving and simultaneously rotating in fluid. Thezone of low pressure is formed behind the sphere. This zone gives the main contribution in the drag. If the sphere moves and rotates in fluid the secondary flow supplies the fluid in the zone of low pressure behind the sphere, the pressure in this zoneincreases and the drag decreases. In the case of a smooth sphere this effect is visible for the large angular velocity only whereas in the case of the rough sphere it can be observed even for the small one.

Druh

D - Stať ve sborníku

CEP obor

BK - Mechanika tekutin

OECD FORD obor

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Projekt

<a href="/cs/project/IAA200600603" target="_blank" >IAA200600603: Experimentální a teoretický výzkum Magnusovy síly působící na pevnou částici v tekutině</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Materialy VIII Meždunarodnoj konferencii po neravnovesnym processam v soplach i strujach (NPNJ'2010)

ISBN

978-5-7035-2184-7

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

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Název nakladatele

MAI-PRINT

Místo vydání

Moskva

Místo konání akce

Alušta

Datum konání akce

25. 5. 2010

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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